<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="@/assets/logo.png" alt="">
      </div>
      <!-- 登录表单区域 -->
      <el-form label-width="0px" class="login_form" :model="form" :rules="rules" ref="loginFormRef">
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input prefix-icon="el-icon-user" v-model="form.username"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input type="password" prefix-icon="el-icon-lock" v-model="form.password"></el-input>
        </el-form-item>
        <!-- 按钮区域 -->
        <el-form-item class='btns'>
          <el-button type="primary" @click="loginForm">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data () {
    return {
      form: {
        username: 'admin',
        password: '123456'
      },
      // 用户名与密码校验规则
      rules: {
        username: { required: true, message: '请输入用户名', trigle: 'blur' },
        password: { required: true, message: '请输入密码', trigle: 'blur' }
      }
    }
  },
  methods: {
    // 表单登陆前预验证
    loginForm () {
      this.$refs.loginFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post('login', this.form)
        console.log(res)
        if (res.meta.status !== 200) return this.$message.error('登录失败！')
        this.$message.success('登录成功')
        window.sessionStorage.setItem('token', res.data.token)
        this.$router.push('/home')
      })
    },
    // 表单重置
    resetLoginForm () {
      this.$refs.loginFormRef.resetFields()
    }
  }
}
</script>

<style lang="scss" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
  .login_box {
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    .avatar_box {
      width: 130px;
      height: 130px;
      border: 1px solid #eee;
      border-radius: 50%;
      padding: 10px;
      box-shadow: 0 0 10px #eee;
      position: relative;
      left: 160px;
      top: -65px;
      background-color: #fff;
      img {
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
      }
    }
    .login_form {
      position: absolute;
      bottom: 0;
      width: 100%;
      padding: 0 20px;
      box-sizing: border-box;
      .btns {
        display: flex;
        justify-content: flex-end;
      }
    }
  }
}
</style>
